Machine for applying sealing material to can lids



m4 ik C. MIDUELTHON. TAC-fami Fore Awww@ SEALMG MATERIAL To CAN blos.

Fi DGT, L. 1910` 2 2 atented dan. d, W235i..

CORNELIUS ivrrnntn'rnron, or srnvnncfna, NORWAY.

imonline non arrrrrnc sentirte Ma'rnmcar. ro can uns.

j Application filed October 4, 192D. Serial No. 414,716.

i 'lo which the'following is a specification.

A machine has been used prior to the present invention for applying 'seallng Inaterial to thelids ofl tins by means of a reciprocating he and exerts a pressure abruptly over the entire surface of the lid.

The method carried out by this known -inachine requiresa great force, `and at the 2c same time the jerky action of the method as to is injurious to the machine as well the quality'ofthe product. .Y

.The primary object of the present invent tion is to overcome/the disadvantages of this known type of machine by furnishing a man chine which exertsthe pressure gradually over successive portions of the lid. This may be accomplished by mountingv the :supporting block on a rotating table., .which block passes duringl the rotation of the table, below a heating head, which may be vertically adjustable and so constructed that the pressure upon the lid and sealing material is exerted gradually. The means for exerting '35 the pressure and applying heat may consist of a fixed head providedwwith inclined edges and adaptedtosub'ject the lids and sealing' l. ringsf toy. a gradually -increasing pressure'and heating when they pass belowr a@ the same. Said' pressing and heating means may also consist of a drum'which will rotate freely when Ain contact with the lids. The press'inay also be provided with means `for bending the tearing tongue"ftlre-.lid.

Referring to the drawingsf Figures 1 and 2 are side views, at right anglesto each-other of the table carrying ythe supporting blocks', the heating head 'in this constructlon being fixed.' 5o II4`igure 3 is a planvieyvathereof withthe r,su'pportlim'r blocks rembted.

' F1guref'et1`sa vertical sectional viewhof a ting plunger or the like, which 15 plunger conforms .to the contour of the lid press in which the pressure is exerted by a rotatable device.

Figure 5 is a top plan view of one type of lid which may be operated upon by the improved inachine.

Referring to Figures 1, 2 and 3, 1 is the lheating head, below which Athe supporting blocks for thelids and sealing material may pass, for the purpose of heating the sealing' rings, and pressing the same against' the lids.- The heating head is carried by an arnrla adjustably attached to a fixed shaft l'gprojecting from the frame 1c of the press.

The rotatable disc 2 serves the purpose of pressing down the tongue of the lid'l,

shown in Fig. 5. The disc is mounted upon a shaft 2 restingr at one end in a bearing 2b, which is fixed at one end to the heating`- head and at the other end to a bearing 2C, which `is adjustably carried 'upon a vertical bar 2f.

A. turnable wing 3 is pivotally mounted on an inclined plate 4t on the front or entrance end of the head l and has an extensioni)a on the opposite sideof the pivot of the wing, the said extension being disposed at a suitable angle to the front part ofthe plate. 0n the opposite or discharge end of the heating head is placed a similar plate' 5, having no turnable wmg.

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. The support blocks 7 are arranged at spaced points on the upper surface of the table 8 and are constructed in the usual manner, each having a vertically reciprocating plate 6 acted upon by a spring,I as shown at the left in Figure 1. Upon this plate 6 are placed the lids carrying the sealing rings.

The table 8. which carries the supportring blocks 7 is rotatably mounted on the frame Beneath Vthe table and arranged directly under the heater-head is a support 8, which engages the table and prevents tlie table from being forced down on one side by the pressure exerted by the heater'.- head, when one of the support blocks with 'a .lid thereon is moved beneath the head 1'.

The heating head 1 is adjusted to a proper .distance above thetable 8, according to the size of 'the supporting blocks 7, and is heated to a desired degree by any suitable means, forinstance by electricity. When 60 F of the shaft 12. As the lid passes beneath the lannular flange 30 on the drum 30, the tongue startin ther machine, the blocks 7 placed upon t e table will pass below the wing 3, and will be subjected to a gradually increasing pressure, as the blocks move beneath the main portion of the head l, the .lids being thereby held in a lixed manner upon the blocks and the sealing rings being heated by the head 1. When a block with the lid which it carries passes the disc 2, the tongue 50 of the lid is engaged by said disc andgradually pressed downwards until it occupies 4a position substantially at right angles to the lid. The block 7 when leaving the heating head passes below the plate 5 and due to the inclined surface of the same, the pressure against the plate 6 will'be gradually decreased, and the spring beneath the said plate will force the same upwardly.

v',lftwill be understood that "the greater the length ofthe/heated surface passed by thf block 7 andthe lid, the weaker may be the electric, current necessary for heating the head/1. e,

Referring to Fig. 4, 11 is the machineframe. The main shaft 12 ispn'lounted in 5`5 ings may bearings, suitably varranged in arms fixed to the frame, the shaft being rotated from a pulley 13 through an intermediate coupling 14, which may be released by means of a pedal 15 acting upon the coupling through a -lever and bar device 1G, the coupling being normally in active position by means of a spring 17. The turnable table 18 is rotatably mounted on a sleeve 19, which is provided with a flange shoulder`20, holding the table 18-againstthe frame, the sleeve being connected to the frame by means of screws 21. The main shaft 12 further carries a supporting roll'22 bearing against a roller path on the table and having the same funetion as the .part 8a of Fig. 2. The table is rotated by means of a beveled gear 23 intermeshing with a toothed rim-24 on the lower .side of the table. The bolts 25 and 26, fixed to the frame, carry supports 27 and 28 for the shaft 29, upon which is mounted the heated pressing drum or heating head 30. The supports 27 and 28 may be vertically adjusted by means of nuts below and vabove the same. In order that the shaft may be adjusted to vary its inclinationfrelatively to 'the table 18, itmay rest in suitable ballbearings 31 and 32, so that one of the bearbe raised above the other without causing the shaft to bind.

The lids to be provided with sealing-rings are placed on supporting blocks 7a upon the table and are successively carried below the heating-drum as the table is rotated by means of the lid .will

be gradually bent down-l wardly by saidfiange. By adjusting the supports 27 and 28 relatively to each other as well as to the table, a suitable positioning of-the drum may be secured. By this construction a suitable pressure is secured as well as uniform pressure upon the sealing material, as the drum rotates when the lids engage the same. Due to the gradual pressing of the rings only a small force is necessary to drive the apparatus, a jerky operation of the machine is prevented, and the machine .will only be subjected to slight wear.

Due to the continuous movement of the table, the machine will be more simple in construction than such. machine heretofore known. in which several releasing and stopping means are used in order that the table may be stopped in aposition suitable for moving the heating-head against the lid, in order to liu the sealing material to the lid. For this reason the machines were very complicated, and the reliability of the machines not as good as that obtained by the improved machine herebcfore described.

Having now particularly described my invention what l claim isz- 1. A machine forlixing sealing material to the lids of tins and the like, including a heating head member, a table member Iassociated therewith, a support block carried by one of said members and adapted to support a lid and its sealing material, means for r0- tating one of said members relatively to the other member to cause said block to pass between said members, and means associated with one of said members for bending down a tongue on a lid supported by said supporting block.

2. A machine for fixing sealing material to lids of tins and the like, including a heating head member, a table member associated therewith, a support block carried by one of said members and adapted to support a lid and its sealing material, means for rotating one of said members relatively to the other member to cause said block to pass between said members, and an annular disk-shaped member associated with said heating head member for bending down the tongue of a lid carried by the supporting block when said supporting block is passed between said members.

3. A machine for fixing sealing material to the lids of tins and the like including a heating head member formed of a rotatable drum, a table member associated therewith, a support block carried byffdne of said members and adapted to support a lid and its sealing material, means for rotating one of said members relatively to the other member to cause said block to pass between said member and anannular flange carried by the drum and adapted to press down the tongue of a lid carried by the supporting vblock when said supporting block passes between the members.

L. A machine for fixing sealing meteiial membei relatively to the heeelA iiiember to 10 to the lids of tins and the like including a, cause said block te pass between said memlieating; head member formed of :i plete hav bers. ing diverging side edges, a pivoted flap an In testiniony whel'eef luilix my sigrizitme. ranged at (me edge of Said plate, e 'table x T'w Tl" *w r1" lf men'xbeasseeiated with said head member, a, (URB PALN Mi DDLLi HDN supijioift vblock,Cai-Pied by the table member lWitnesses:

:md adapted to support a lid und its sealing A. B. CQOK,

material, and means for rotating Said table EDiTH SKANGEN. 

